/Engine/Source/Runtime/MovieScene/Public/MovieSceneCommonHelpers.h
Gather up descendant movie scenes from the incoming sequence
static void GetDescendantMovieScenes ( [UMovieSceneSequence](API\Runtime\MovieScene\UMovieSceneSequence) * InSequence, [TArray](API\Runtime\Core\Containers\TArray)< [UMovieScene](API\Runtime\MovieScene\UMovieScene) * > & InMovieScenes )